Well once the money is made or inherited or stolen or however these come to their fortunes to the level where this sort of car can be bought as an investment there's no skill involved in either identifying or buying these cars - you just hang on till you win the auction or the seller says yes.
From then on in there's even less 'art' to the process of ownership; surely it won't ever be driven - just stored and cleaned, stored and cleaned until it's deemed the right time to maximise the owner's investment and the car will be sold - repeat cycle.
Good luck to them, but I know that if I was lucky enough to have the automobile equivalent of Jennifer Lawrence and the money to keep her, I'd be taking her out every day and treating her right every night!